Switch for electrically controlled signals



Jan- 1, 1935. R R. RAcH ET AL SWITCH FOR ELECTRICALLY CONTROLLED SIGNALS Filed Feb. 26, 1934 l nr Patented Jan. 1, 1935 UNITED, STA"lfilf-S giATENT4 OFFICE Reinhold n. nach and William E. nach,

Detroit, Mich. 4

.f AAppiaanon rebruary'zs, 1934,- serial No. '112,935

` r2 claims. (cl. zoo-16s);

Our invention relates to electric switches and plate 1 relative to the metallic case and screws 8 a. case therefonand has for its general-object the rigidly holding the plate to the case in the posiprovision of a means whereby-the switch is opertion as shown inFigure 1. ated by a sliding motion of the operating button v The contact actuating member includes a cen- 5 and a specially designed spring that will form tral cam portion9 and elongated iiat end portions 5 contact'for closing either of the two circuits co- 10. lThe free corners of the cam portion are ordinated with the switch. rounded as at 12 and normally, the free ends of While this switchis readily applicable to any the leaf springE 13, constituting the movable conphase of the electricalart, in designing the switch tact extend over the rounded corners of the cam y our primary intention is to provide one that is portion thus holding the actuating member 10 particularly adapted to our combination electricj against accidental sliding movement. The free right and left turn, stop and tail light signal, the ends of the spring contact element 13 engage the application for patent for same being filed simulrespective fiat end portions 10, thereby holding taneous with this application. the slidable actuating member against the base l5 It will become obvious that the invention posof the casing. A button 11 extends forwardly 15 sesses further advantages, clearly disclosed durfrom the outer 'face of the slidable member for ing the course of the following detailed descripfacilitating the actuation of said member. tion, illustrated throughout the accompanying Spring 13 is secured where shown, to plate 4 drawing, and more specifically pointed out in the by screw 14 with the usual nut, lock nut and washappended claims. er. Said screw also forming an electric terminal 20 With reference to the drawing: and likewise secured to wire A. Similar screws 15 Figure 1 is a longitudinal section of the comand 16 are provided in spaced apart relation and plete invention through the center thereof. secured to plate 4 where indicated. Screw 15 Figure 2 is a top plan view of the invention having wire B secured thereto and screw 16 being with terminal and switch connecting nuts omitconnected to wire C. The customary nuts and 25 ted and partly broken away so as to expose a part washers for screws 15 and 16 are clearly visof the interior thereof. ible.

Figure 3 is a front elevation of the switch, Face plate 1'7 is employed and is secured to the showing the same normally secured to a support metallic case by means of screws 18 and through and ready for use. preferably instrument panel D of an automobile. 30

Figure 4 is an elevation of the face plate of The usual nuts and washers for screws 18 are the invention. obvious.

Figure 5 is a greatly reduced top plan view of In Figure 4 it is seen that rectangular slot 19 is the principal actuating member of the invention. provided within plate 17. and button 11 of mem- Figure 6 is a sectional view taken substantially ber 9 slidably projects through said slot as in 35 upon line 6--6 of Figure 1. Figure 1. When button 11 is slidably moved to Figure 7 is an isometric View of a portion of the dotted position of 11A it is seen that the adthe top insulating member of the invention. jacent end of spring 13 is moved to the dotted The invention comprises an elongated metallic position 13A and accordingly contacts screw 16 case having bottom 1, sides 2 and ends 3, and which closes an electric circuit, or a circuit co- 40 the top thereof open as clearly indicated in Figordinated with the right turn signal of an autoures 1 and 6. mobile signalling device, and likewise when but- With particular reference to Figure 1 it is obton 11 is moved to the dotted position of 11B the served that the top of said case is completely inadjacent end of spring 13 is moved to the dotted closed by plate 4, which is of the formation as position of 13B and likewise contacts screw 15 45 indicated and is composed of a suitable insulatand closes an electric circuit, or a circuit coordiing material referring to Figures 1 and 7, it is nated with the left turn signal of an automobile clear that transversely extending recesses 5 are signalling device. provided for the respective ends of plate 4 which It will be observed that regardless of the posiare adapted to receive the similar formed portion of the slidable actuating member, a portion 50 tion 6 of the metallic case. Lugs 'l are provided of the contact spring 13 will be in engagement on the plate 4 where shown and each of said lugs with the actuating member, urging the same outhas a threaded aperture for the reception of wardly against the base of the casing and thus screw 8, which passes through ends3 respectively. preventing any rattling of any of the movable In this manner recesses 5 prevent pivoting of parts of the switch. 55

an electric switch is required, as well as bein.g v specially designed for an,automobile, signalling.,

device.

Having thus described our invention, what we claim as new is: Y

1. In an electric switch, a casing open at its top, an insulating plate securediinafsaid:opentop, y stationary contacts carried by theinsu1ating,.

plate, a convex contact spring arranged in the casing.- :and secured, zat.. vits. fintennediate, portion to: thejnsulating iplate, the. .ends of 'thea Contact spring being normally ,out ot .contact-'with the respective,l stationary. contacts,`- an:z actuating member slidable-inf-thecasing andl including a central-cam portion V.and elongated end portions, said Contact spring normally extending'oveitthe cam portion and vengaging the respective end portions of theA actuating memberktohold the same againstuthe. adjacent wall *ofl the. casing,..a button ,t projecting outwardlyfrom the. ,actuating member through the baseofV the casing ,for slid-v ing4 4saidA actuating member Ito selectively?, move the; ends of the. contact spring into engagement;

withthegstationary contacts, and extensionsparf-L rangedatthe ends of thexlcasingx.iorzreceiving.

and, guiding Vtherespective; elongated end; portions of the actuating member during the sliding movement of the latter;

2. In an electric switch, a metallic casing including a base, side and end walls, an insulating plate for disposition in the open top of the casing, apertured lugs depending from the ends of the insulating plate, fastening screws extending through the.v end walls ofthe casingcand threadedinto the; respective lugs, t,theupper face of the insulating 'plat'being cut away at each end, the Iupper edge of each end wall being disposed lat- I"erally to engage the respective out away portion :oi-ttheninsulatingtplate; stationary contacts carried by the insulating plate, a convex spring arranged in thecasing and secured at its intermediateportion to the insulating plate, the ends of the contact spring being normally out of contact withthefrespeotive stationary contacts, an actuatingmember slidable in the casing and including a central cam portion and elongated end portions,;: said contact spring, normallyV extending overtheam-.portionvl and engaging theA respective endY.portonsfofi-:the` actuating'vv member to' vlioldi the-esame; against the adjacent `wallof the casing, a buttonaprojectingoutwardlyfrom the actuating member-through the base of:v the casing for-sliding said actuating member to selectively move the ends lef thegcontact: spring finto. engagement: with the, stationarygcontacts; l the-rend' walls of4 the' casing having-openings to permit thek elongatedy portions of Vtheactuating member to slidev there-v through@ 'and reduced extensions` formed.v von the. sidefwallsaof thecasing. for receiving and guiding; the respective elongated:,.endyportions, said side wall.. extensions., projecting. beyond' the. ends of the'casing..` Y

REINHOLD R.RACH. WILLIAM RACI-I. 

